Reconstitution and Injection
How to reconstitute freeze-dried peptides, choose syringes and needles, rotate injection sites and recognise irritation.
These step-by-step guides explain how freeze-dried peptide is reconstituted with bacteriostatic water, how to work out concentration and syringe units, how subcutaneous injections are given, how to choose syringe and needle sizes, which sites are commonly used and which to avoid, and when injection-site redness needs medical care.
- Peptide Appearance and Color GuideMost peptides appear as a white to off-white powder. A clear, colourless solution is normal. Cloudiness, particles or strong colour changes can signal a problem.
- How to Reconstitute Peptides: Step-by-StepReconstitution means adding sterile liquid to freeze-dried powder to make a solution. Work cleanly, add the liquid slowly, swirl gently and never shake.
- How to Inject Peptides Safely: Subcutaneous GuideSubcutaneous means into the fat layer just under the skin. Use a new sterile syringe every time, rotate sites and dispose of sharps safely.
- Choosing the Right Syringe and Needle SizeMost subcutaneous peptide work uses a 29 to 31 gauge insulin syringe. Choose the syringe size that fits the volume so the markings are easy to read.
- Safe and Unsafe Injection SitesSubcutaneous injections go into fatty tissue. Rotate between sites, stay away from veins, bruises and scars, and never inject into the face, neck or joints.
- Injection Site Redness and IrritationMild redness, itching or a small bump after an injection is common and usually settles in a day or two. Spreading redness, heat, pus or fever needs medical care.
Educational resource only. This information is not medical or legal advice, and Peptide Authority does not offer peptides or any products for use.